Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hello, and thank you for allowing me the opportunity to help you. If I am not online when you are, please allow me time to return. Can you tell me what the temperature on the rear view mirror says? Does you vehicle have automatic a/c? Will the system start right back up after the vehicle is restarted?
The mirror displays OC and no it does not resume working, sometimes it is the next morning before it will work.
Yes it has the auto control with aux rear control for the rear a/c
Okay. Thank you. This system does work with an input from the ambient air temperature sensor. If that sensor is no longer reading then this will occur. You need to start by replacing this sensor in the front of the vehicle. This is located under the passenger front parking light as shown.
OK, think I saw it when I removed the bad horn but it was more toward the middle of the radiator frame.
Bobby, I'll start there and if I need to do more will I be in contact with you, I prefer to stay with one Tech.
Yes, just come back here with your findings and we can continue if necessary.
Bobby, I ran to NAPA and replaced the sensor, I will see if this corrects the ac problem over the next few days but the temp on the rv mirror is still "OC". Thank you, Ski (XXXXX@XXXXXX.XXX)
Bobby,Well replacement of the “ambient temp sensor” was not the answer, A/C cut out yesterday, was fine this am but cut out again after about an hour this afternoon and it is always in the heat of the day. It does not matter if the rear unit is on or off. It is not low on refrigerant, air flow is great, in fact when in auto the fan kicks into high when the cabin starts to get warm as it should. All dampers / doors work fine for air flow to the floor, top vents or both. I would think a high / low pressure switch would not take all night for the system to go back to operating correctly. Just seems there is a simple solution, what is it?Thank you
There is no power at the compressor, there is no "control power" to the compressor relay, I can jump the relay and the compressor will run and get cold..
Sorry for getting back late but went fishing in the Keys Thank you
This is an auto system, auto temp, auto vents, auto fan speed, all these functions work fine.